Mechanical fan.



2 0 mm 7 nu 0 d e t n e a P R E R A K G 5 6 m 7 0 N MECHANICAL FAN.

(Application filed. Oct. 8, 1901..)

2 Sheets-Sheet I,

(No Model.)

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No. 7|0,4B5. Patented Oct. 7, 1902.

G. KAISER.

MECHANICAL FAN.

(Application filed. Oct. 8, 180,1),

2 Sheets-Sheet 2.

( I0 Modal.)

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UNTTED STATES PATENT OFFICE.

GABRIEL KAISER, OF PARIS, FRANCE.

MECHANICAL FAN.

SPECIFICATION forming part of Letters Patent No. 710,465, dated October7, 1902.

Application filed October 8, 1901. Serial No. 77,981. (No modelfi To allwit/fin it may concern:

Beit known that L'GABRIEL KAISER, manufacturer, of 12 Boulevard St.Martin, in the city of Paris, Republic of France, have invented Improvemenjs Relating to Mechanical Fans, of which the following is afull, clear, and exact description.

This invention relates to mechanical fans; and in order that my saidinvention may be readily understood and carried into effect I willdescribe the same fully with reference to the accompanying drawings, inwhich- Figure 1 is a sectional elevation of my improved mechanical fan,the section being taken through the middle of the sheathor casingforming the handle. Fig. 2 is a sectional elevation taken at rightangles to the former. Fig. 3 shows a modified form of mechanism. Figs.4, 5, and 6 are detail views of the wings or blades of the fan. Figs. 7and 8 show two modified forms of mounting the wings or blades on thefan.

In the various figures the same characters of reference designate thesame parts.

According to my invention each of the three wings or blades a of myimproved fan is formed with a difierent boss or hub b c d, respectively;but all these hubs are drilled with a hole 6 and are adapted to bemounted upon a central sleeve f, having a flange-like head g. The hub 19of the first blade is formed with a small notch h, in which engages atongue 2', Figs. 2 and 4, integral with the head g. The tongue 1' alsoarrests the hub c of the second wing or blade by striking against theshoulders Lastly, the hub 61 of the third blade is arrested by theshoulders It. This arrangement has for its object to impart a certainfree motion to the blades, so as to permit them to range themselvesbehind one another when at rest by their own weight and to take up sucha position in respect of each other by the action of centrifugal forceas to be equidistant one from the others during the operation of thefan, Fig. 4.

I may of course provide a larger number of blades-say four-if desired,and distribute them in a similar manner.

The blades are retained on the tube by means of a washer Z and nut m,the tubef being screw-threaded for this purpose over a certain part ofits length.

In order that the blades may receive motion, the tubefis fitted upon aspindle n, integral with a pinion 0. The tubefcould be internally tappedto enable it to be secured upon a left-threaded rod or, as shown in Fig.7. The tubefcould also end into a left-threaded rod, which would screwinto a tapped part 71'', integral with the spindle n. This pinionreceives motion from a toothed wheel p, fast on an arbor (1. Upon thearbor q are also mounted loose a pinion r and a ratchet-wheel s, inwhich engages a pawl t, retained by a spring L6. The ratchet sis fixedto and moves with the pinion r and is consequently loose on the arbor q.The said wheel-train is lodged between two plates '1) as, and the wholeis adapted to oscillate at y, as will be hereinafter described. Thepinion r is in gear with a toothed sector z, formed at the end of alever 1 of the first order, having its fulcrum at 2 and the power at 3.As the plate a; is pivoted at y and as the fulcrum of the lever 1 isarranged upon the said plate at 2, this plate acts as a lever of thethird order, having its fulcrum at y, its power at 2, and its resistanceat 4, which is the pivoting-point of another lever of the first order.The lever 5 of the first order has its power at 4, its fulcrum at 6, andits resistance at 7, at which point it is coupled to the lever 1 of thefirst order. A slot 8, formed in the plate at, permits of the passage ofthe screw 7, assembling the two levers 1 and 5. The combination of thethree lovers 1, 0c, and 5 insures a relatively great power withoutnecessitating a large stroke for the power-lever 9. A spring returns thelever 1 to rest. The whole is inclosed in a casing 11, forming a flathandle.

The combination of the pinion 0, the wheel 19, with ratchet s, thepinion r, and the sector ,2 has for its object to impart a quick motionto the blades of the fan in one direction and to disengage the operatingmeans for the re turn of the sector.

in Fig. 3 of the drawings is shown a modification of my improvedmechanical fan in which the lever 1 of the first order is operated bymeans of a slide 12. Another lever 13 of the first order has its fulcrumat 14, its power upon the slide 15, and its resistance at 16,constituted by an articulation disposed at the extremity of the lever 1.Therefore in order to actuate the entire mechanism the two slides 12 and15 are operated.

The forms, details, accessories, materials, and dimensions of my systemof mechanical fan may of course be varied Without altering the nature ofmy invention.

I claim 1. A mechanical fan comprising a series of blades adapted tofold when at rest one upon the other and adapted to separateautomatically by centrifugal force, a spindle 'n, upon which the bladesare mounted, a pinion 0 on the said spindle, a gear-Wheel p for drivingthe pinion 0, a pawl and ratchet and a pinion "r for driving thegear-Wheel p, a toothed sector z for driving the pinion 1*, a compoundsystem of levers for operating the pinion r and means for operating thelevers, substantially asdescribed, the levers of the compound systemoverlying each other.

2. A mechanical fan comprising a series of blades adapted to fold whenat rest one upon the other and adapted to separate automatically bycentrifugal force, a spindle 71. upon which the blades are mounted, apinion 0 on the said spindle, a gear-wheel p for driving the pinion 0, apawl and ratchet and a pinion r for driving the gear-Wheel p, a toothedsector z for driving the pinion r, a compound system of levers foroperating the pinion r and means for operating the levers, said compoundlever system comprising the two levers 1 and 5 of the first order andone :0 of the third order, substantially as described, the levers of thecompound system overlying each other.

The foregoing specification of my improvements relating to mechanicalfans signed by me this 23d day of September, 1901.

GABRIEL KAISER.

Witnesses:

J. ALLISON BoWEN, MAURICE H. PIGNET.

